Electrical make-and-break tripping mechanism for two or four cylce gas-engines.



M. H..BOHLAND.

ELECTRICAL MAKE AND BREAK TRIPPING MECHANISM FOR TWO 0R FOUR CYCLE GASENGINES.

APPLICATION FILED MAR- 15. I916.

. 1,216,651. Patentd Fe b.20,1917

Witnesses. 1 Inventor.

W QM' MATTHEW H. BORLAND, 0F SEEKONK, M'ASSAGHUSETTS. v

ELECTRICAL MAKE-AND-BBEAK TRIPPING MECHANISM FOR TWO OR FOUR CYCLE GAS-ENGINES.

Application filed March 15,

To all whom it may concern: I

Be it known that I, MATTHEW H. Bon- LAND, a subject of Great Britain,and a resident of Seekonk, in the county of Bristol and State ofMassachussetts, have invented a new and useful Improvement in Electricall-vlake-and-Break Tripping Mechanism for Two or Four Cycle Gas-Engines,of which the following is a specification.

My invention relates to improvements in electrical make and breaktripping mechanism for two or four cycle gas engines,- and the objectsof my improvements arefirst, to obtain a positive electrical contact ofigniter point; second, to give a positive release to the ignitermechanism, thereby obtaining a sure ignition to every explosive strokeof the engine inside of the cylinder, which increases the revolution andpower of the engine.

I obtain these objects by the mechanism .illustrated in the accompanyingdrawings,

in which Figure 1, 1s a sideelevatlon of the whole tripping mechanism;Fig. 2, is a cross section of the mechanism shown in Fi 1; Fig. 3 is afront elevation of the mechanism; Fig. 4: is a side view of the tripblock shown as 1 in Figs. 1, 2, and 3; Fig. 5 is a top View of the tripblock shown in Fig. 4; and Fig. 6, is a side elevation of the engine.

Similar letters and similar numbers refer to similar parts throughoutthe several views.

Fig. 1 shows the tripping mechanism, and 1 is the trip block, 2, isstop-pin in plunger head of pump used in circulating water around thejacket of the cylinder which pin prevents the trip block from beingforced out of plunger head by the spiral spring 4, 5 is a washer havinga hole 6 through which screw 7 is inserted to hold spiral spring 4: inposition. 8 is an air vent to allow trip 1 to slide longitudinally moreeasily. 9 is the hole in plunger head through which igniter spindle 13is placed. In Fig. 2, 10 is the recess in plunger head into which thetrip block 1 operates longitudinally. 11 in Figs. 4 and 5, is a squarehole in the trip block through which the igniter spindle drops at thetime of ignition. 12 in the samefigures show a lip in the trip blockwhich when the trip block is moved longitudinally by the spiral spring4, comes in contact with the stop pin 2 to prevent said Specification ofLetters Patent.

1916. Serial N0.84,389.

trip block from being forced out of the recess 10 of plunger headv A. 13is the ignition spindle, 14 is a lever for movable electrode, 15 is aspiral spring having a lifting power and 17 is a spring having adownward pressure on the ignition spindle, 16 is the trip timer and 18is a collar on ignition spindle to hold spring 17 in position.

This trip block gives a positive contact of ignition points, and also apositive release to igniter mechanism. The trip block 1 is placed in theplunger head, then pin 2 is inserted. Trip block has a recess (see 3 inFigs. 4 and 5), into which one end of spiral spring 4 is inserted,washer 5 is then placed in position and screw 7 is then screwed on.

Plunger A, is then placed in bore of pump barrel F and through pumpgland E. Eccentric rod G has a bore at one end to receive the small endof plunger head. This end of eccentric rod is held on the plunger head.by washer 5 and screw 7. The other end of said rod is attached to crankshaft D in an eccentric position, which gives the plunger the requiredstroke for circulation purposes movement in the plunger head.

Spiral spring 4 in plunger head forces I the trip block outwardly whenthe plunger A is lowered by the eccentric rod G. The pin 2 is so placedas to stop the outward movement of the trip block 1 so that the hole 11in said trip block will stop half way under theigniter pin 18 in orderthat when plunger A is raised vertically by the eccentric rod G, thesaid igniter pin will therefore be lifted upwardly, and the trip blockpushed inwardly into the longitudinal recess of plunger head by timer16. When the trip block is raised at the proper height as regulated bythe timer 16, the said trip block is pushed back into the plunger head asufficient distance to allow the igniter pin to drop suddenly into thehole 11, thereby breaking the current and causing the spark.

The ignition spindle 13 and trip block 1 both have flat surfaces at thepoint of contact so that the Wear will come on each surface evenly.

Claims:

1. In an ignition apparatus for gas engines, a water circulating pumphaving a plunger, a transverse chamber in said plunger, a trip'blockslidably mounted in said chamber, a spring for projecting the trip blockoutwardly from said chamber, a stop pin to limit the extent of outwardmovement of said trip block, an air vent co1nmunicating with one end ofsaid chamber, to permit escape of air upon retraction of said tripblock, an adjustable timer pin in the path of the projected end of saidtrip block, an igniter mechanism operated by said trip block and commonmeans for operating said pump plunger and moving the trip block past theend of the timer pin. 2. In an ignition apparatus for gas engines, atrip block having a circular body, having a transverse boretherethrough, a shoulder or lip at one end adapted to engage a stop pin,a stop pin inserted crosswise in said chamber, and engaging the saidshoulder of the said trip block, an igniter pin operatingperpendicularly, and dropping through a bore of said trip block atmoment of ignition.

3. A tripping mechanism for igniters comprising the plunger head of aWater circulating pump, of a slidable trip block operatinglongitudinally in the horizontal Copies of this patent may be obtainedfor chamber of the plunger head of the water circulating pump, means tooperate said trip block longitudinally, consisting of a spiral springinserted horizontally in said chamher and abutting one end of said tripblock thereby creating a slidable outward movement of trip block, meansto operate saidthe plunger of a pump, an igniter mechanism, a trip blockmounted in said plunger, adapted to operate said igniter mechanism,stationary means for reciprocating said trip block, and common means foroperating said pump plunger and moving said trip block into cooperativerelation with said stationary means.

MATTHEW H. BORLAND. lVitnesses:

EPHREM A. GRENIER, CORA L. GRENIER.

five cents each, by addressing the Commissioner of Patents, Washington,I). C.

